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TMDLs and Implementation Plan: Greater Trinity Region

The TMDL and its I-Plan are the road maps for activities to keeping the river segment safe for recreation.
fishing at Lower West Oakland LakeTrinity River Segment 0841 at Collins Streetheron on the Trinity River

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Project Location and ParametersGreater Trinity Project NavigationTMDL Program Navigation
Watershed Counties: Dallas, Tarrant
Parameter: Bacteria
River Basin: Trinity
Segments: 0805, 0822A, 0822B, 0841, 0841B, 0841C, 0841E, 0841G, 0841H, 0841J, 0841L, 0841M, 0841R, 0841T, 0841U

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Status and Activities

Reports and Other Documents

TMDL Projects


Hot Topic Comment on Proposed TMDLs

The public is invited to comment on the proposed TMDLs for indicator bacteria in watersheds upstream of Mountain Creek Lake. Community stakeholders worked with the TCEQ to develop these TMDLs.

You may submit your comments in writing, or orally at a public meeting.

Submit Comments in Writing

Written comments must be received at the TCEQ no later than midnight on June 27, 2016, and should reference the Four Total Maximum Daily Loads for Indicator Bacteria in the Cottonwood Creek, Fish Creek, Kirby Creek, and Crockett Branch Watersheds Upstream of Mountain Creek Lake.

By Mail:
Attn: Mr. Jason Leifester
Water Quality Planning Division
Texas Commission on Environmental Quality
MC 203
P. O. Box 13087
Austin, Texas, 78711-3087

By Fax:
Attn: Mr. Jason Leifester

Online at: from May 27, 2016 through June 27, 2016.

Submit Comments at a Public Meeting

The TCEQ has scheduled a public meeting to receive comments on the proposed TMDLs:

Thursday, June 23, 2016
6:00 p.m.

Offices of the City of Grand Prairie
Environmental Services Department, 2nd floor
206 West Church Street
Grand Prairie 75050

At this meeting, people have the opportunity to present oral statements when called upon in order of registration. An agency staff member will give a brief presentation at the start of the meeting and will be available to answer questions before and after all public comments have been received.

Persons with disabilities who have special communication or other accommodation needs who are planning to attend the meeting should contact the commission at (512) 239-6682. Please make accommodation requests as far in advance as possible.

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Approved I-Plan

On December 11, 2013, the commission approved the I-Plan developed by the stakeholders.

By resolution in June 2015, the stakeholder Coordination Committee added four tributary segments (0841F, 0841K, 0841N, and 0841V) of Mountain Creek Lake to this project. These segments and their TMDLs will be incorporated into the I-Plan after the TMDLs are adopted.

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Adopted TMDLs

On the date of their approval by the Environmental Protection Agency (EPA), all these TMDLs become part of the state’s Water Quality Management Plan.

Cottonwood Branch and Grapevine Creek

On September 21, 2011, the TCEQ adopted the TMDLs for Cottonwood Branch and Grapevine Creek. The EPA approved them on May 30, 2012.

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Lower West Fork Trinity River

On September 24, 2013, the TCEQ adopted these TMDLs. The EPA approved them on November 7, 2013.

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Upper Trinity River

On May 11, 2011, the TCEQ adopted these TMDLs for the Upper Trinity River. The EPA approved them on August 3, 2011.

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Contact Us

Please e-mail us at, and mention the Greater Trinity River plan in the subject line. Or call us at 512-239-6682.

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communities working together taking care of our rivers, lakes, and bays